5. Evoivnus.] 80. CONVOLVULACE&, [7. Abgybeia. 



Bvolvulus alsinoides, L., is a small diffuse perennial with very 

 pretty small bright blue flowers. Common in sandy places. 



6. Rivea, Choisy, 



Erect or climbing shrubs. Peduncles axillary 1-7-fld. 

 Corolla large hypocrateriform. Ovary 4-celled. Capsule 

 thinly woody breaking transversely a little above the base 

 and exposing a central white spongy endocarp with 4 

 seeds, the septa remaining as 4 persistent vascular bundles 

 in pairs, 2 outside and 2 inside the endocarp. 



l. R. hypocrateriformis> Chois. Kalmi lata, Beng. . 

 A climber with silky Btems orbicular-cordate cuspidate 

 leaves, 2-3 §" diam. often broader than long, white with 

 adpressed silky hairs beneath and long-tubed white flowers 

 2"-diam., solitary axillary or terminal, jointed on the 

 peduncle, rarely peduncles 3-fld. 



Scrub jungles in Singbhum, not common. Sirguja, Wood. Hasari- 

 bagh (Koderma forest, etc); Palamau and Santal Parganahs. 

 Fls. Sept. Frs. Nov.-Dec 



L. with rounded or cuspidate tip. Petioles about as long as the 

 leaves. Sepals ovate §T. Corolla-limb glabrous or puberulous without, 

 tube 2 7 long tubular. Capsule sub-globose apiculate |" seated on the 

 l 7 diam. calyx. 



2. R. ornata> Chois. 



Erect, otherwise very similar. L. 3-5'' diam. much more tomentoae 

 beneath. Peduncles 3-7-fld. Sepals lanceolate, |-f". Corolla-limb 

 silky without. 



Jaspur, 12 ft. high, Wood. In the Duars it is nsually about 6-6 ft. 

 and fls. in the rains. 



7. Argyreia, Lour. 



Climbing shrubs with silky hirsute or pubescent leaves. 

 Flowers showy in capitate or corymbose cymes. Sepals 

 adpressed to, and often somewhat enlarged in fruit. Corolla 

 funnel-shaped, very shortly lobed. St. included. Ovary 



462 



